Tire casing or shoe.



D. J.' DEMAS.

T|RE CASING 0R SHOE. APPLICATION FILED IuLY Ia. 19'16.

Alllllllllqltl n.1. DEMAS.

TIRE CASINGl 0R SHOE.. APPLICATloN FILED xuLY|3.191s.

1,228,001 l Patented May 29,1917.

l ZSHEETS-SHEET'Z.

DEMErRros J. DEMAS, or PITTSBURGH, PENNSYLVANIA.

TIRE CASING OR SHOE.-

Specification of Letters Patent. I

Patented May 29, 1917.

Application filed .11113r- 13, 1916. Serial N o. 109,099.

To aZZ whom t may concern:

Be it known that I, DEMETRIos citizen of the United States, residing at Pittsburgh, in thecounty of Allegheny and -State of Pennsylvania, have invented certain new and useful Improvements in Tire Casings or Shoes, of which the following 1s a speciiication.

My invention relates to improvements in tire casings or shoes, provided with preferably internal armors.

An important object of the invention is to provide a tire casing or shoe of the above mentioned character, which is puncture proof to the highest degree, strong, durable, and suitably light. l

Other objects and advantages of the invention will be 'apparent during the course. of the following description. i In the accompanying drawings forming a part of this specificatlon andin which like numerals are employed to designate like parts throughout the same,

Figure 1 is a sect-ion of a tire casing or shoe embodying myinvention taken in the plane of rotation of the tire casing,

Fig. 2 is a transverse sectional view through' the same taken` on line 2-2 of Fig. 1

'Figj 3`is a fragmentary perspective view of the internal armor,

Fig. 4 is a fragmentaryl side elevation,

parts removed, and parts 1n section, of av slightly different form of tire and casing',

Fig. 5 is a transverse sectional view taken on line 5'-5 of Fig. 4.

In the drawings, wherein for the purpose of illustration are shown preferred embodiments of my invention, attention being called rst to Figs. 1 to 7 inclusive, the numeral 10 designates the tire casing or shoe, formed of layers of canvas or fabric 11, impregnated with or covered byrubber and securely united. At its innenportion, the tire casing is provided with the usual beads 12. :The tread portion of the tire casing is provided withv a section of thick rubber 13.

In Figs. 1V to 3 inclusive, the numeral 14 designates a preferably.rnetallic' internal annular armor, which may be formed of suitably J. DEMAS,

thin and flexiblesheet metal. rThis larmor 1s provided in its tread portion`with corrugations or crimps 15 bent therein, which eX- tend inthe plane of rotation of the armor.

lThe function of these corrugations is to im prove the manner yin which the armor is einbodied in the rubber treadportion 13. The

corrugationsl' are preferably apertured, as.y permit of the passage of the shown at 16,', to rubber therethrough, when in the pla'stic state, during the mold-ing of the casing. The armor 14 is secured to the fabric portion 11 by rivets 17 and 18, as shown. The annular armor 14 may be formed in one piece, or two or 'more pieces, as may be found advantageous.

In Figs. 4 and 5, I have shown a different form of the invention. In these figures, the

numeral 19-designates relatively short armor.

plates, which are embedded in the rubber ltread portions 13, as shown. These armor plates taper slightly toward their inner ends so that they may be arranged in edge to edge relation. he tread portion of each armor plate 19 is corrugated, as shown at 20, and these eorrugationsare provided with apertures 21, -for the passage of the rubber. Each armor plate 19 is secured@ the fabric portion 11 by means of rivets as shown.

The armor plates 19 extend inwardly past the section of rubber 13 and project exteriorly thereof and have their ends bent into curved portions 23, which are arranged upon the beads 12, as shown. The outer ends of the corrugations 20 project through the surface of thel tread portionl, to -contact with the road-bed, and function as anti-skid means.

parent that I have 4'From the foregoing description it is ap-l Having thus described my invention, I the tread surface of the casing to form lon- El@ claimz` v gtudinally extending gripping portions to A tire casing containing rubber; and an Contact with the road-bed. A internal metallic armor plate embedded In testimonyl whereof I aiiix my signature E therein7 said plate having its tread portion in presence of two Witnesses.

bent into corrugations 'which extend in the DEMETRIOS J. DEMAS. plane of rotation of the easing, the corruga- Witnesses:

tions being apertured for the passage of the C. L. PARKER,

rubber and having their crests extending to G. C. JARVIS.

Copies of this patent may be obtained for ve cents each, by addressing the Commissioner of Patents,

' Washington, D. C. 

